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Personal experience reveals how to restore Producteev sync in Astrid, indicating hidden settings.
I've been a long-term user of Astrid and Producteev to manage my tasks list. When I went to reinstall Astrid today, I noticed that there was no longer a Producteev sync option. After much digging about on the forums, I found that it's been hidden. You can re-enable by going to Settings -> Misc -> Enable Third Party Add-Ons.
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Martin Paul Eve (2012) studied this question.
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